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【结 构 式】

【分子编号】25154

【品名】tert-butyl (Z)-([(3S)-3-[([(3R,6S,8aS)-6-[(benzylsulfonyl)amino]-5-oxohexahydro-5H-[1,3]thiazolo[3,2-a]pyridin-3-yl]carbonyl)amino]-4,4-diethoxybutyl]amino)[(tert-butoxycarbonyl)amino]methylidenecarbamate

【CA登记号】

【 分 子 式 】C34H54N6O10S2

【 分 子 量 】770.9692

【元素组成】C 52.97% H 7.06% N 10.9% O 20.75% S 8.32%

与该中间体有关的原料药合成路线共 1 条

合成路线1

该中间体在本合成路线中的序号:(XX)

N-Boc glutamic acid delta-benzyl ester (VI) was treated with carbonyldiimidazole (CDI) in THF, and to the resulting acyl imidazole was added MeOH to provide alpha-methyl ester (VII). Further hydrogenolysis of (VII) in the presence of palladium on carbon cleaved the benzyl ester to give acid (VIII). Treatment of (VIII) with ethanethiol in the presence of EDC and DMAP yielded thioester (IX) and this was then reduced with triethylsilane in the presence of Pd-C to glutamic semialdehyde (X), which was shown to exist predominately in the hemiaminal form (XI). Condensation of this aldehyde (XI) with cysteine (XII) led, via the intermediate thiazolidine (XIII), to the bicyclic lactam (XIV) after equilibration to the more stable isomer. Formation of methyl ester (XV) via the acyl imidazole intermediate, followed by trifluoroacetic acid-catalyzed deprotection of the Boc group of (XV) afforded the amine salt (XVI). This was treated with benzylsulfonyl chloride (XVII) in the presence of collidine to give sulfonamide (XVIII), and subsequent ester hydrolysis provided acid (XIX). Coupling of this acid with amino acetal (V) by treatment with EDC and HOBt yielded amide (XX). Finally, hydrolysis of the acetal of (XX) with dilute HCl in acetonitrile, with simultaneous deblocking of both guanidino-Boc groups and cyclization afforded the title compound, which was purified by reverse phase HPLC, and converted to the trifluoroacetate salt.

1 Kogel, B.; et al.; HZ2, a selective kappa-opioid agonist. CNS Drug Rev 1998, 4, 1, 54.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(V) 25140 tert-butyl (Z)-[[(4S)-4-amino-5,5-diethoxypentyl]amino][(tert-butoxycarbonyl)amino]methylidenecarbamate C20H40N4O6 详情 详情
(VI) 25141 (2S)-5-(benzyloxy)-2-[(tert-butoxycarbonyl)amino]-5-oxopentanoic acid 13574-13-5 C17H23NO6 详情 详情
(VII) 25142 5-benzyl 1-methyl (2S)-2-[(tert-butoxycarbonyl)amino]pentanedioate C18H25NO6 详情 详情
(VIII) 25143 (4S)-4-[(tert-butoxycarbonyl)amino]-5-methoxy-5-oxopentanoic acid C11H19NO6 详情 详情
(IX) 25144 methyl (2S)-2-[(tert-butoxycarbonyl)amino]-5-(ethylsulfanyl)-5-oxopentanoate C13H23NO5S 详情 详情
(X) 25145 methyl (2S)-2-[(tert-butoxycarbonyl)amino]-5-oxopentanoate C11H19NO5 详情 详情
(XI) 25146 1-(tert-butyl) 2-methyl (2S)-5-hydroxy-1,2-pyrrolidinedicarboxylate C11H19NO5 详情 详情
(XIII) 25147 (4R)-2-[(3S)-3-[(tert-butoxycarbonyl)amino]-4-methoxy-4-oxobutyl]-1,3-thiazolidine-4-carboxylic acid C14H24N2O6S 详情 详情
(XIV) 25148 (3R,6S,8aS)-6-[(tert-butoxycarbonyl)amino]-5-oxohexahydro-5H-[1,3]thiazolo[3,2-a]pyridine-3-carboxylic acid C13H20N2O5S 详情 详情
(XV) 25149 methyl (3R,6S,8aS)-6-[(tert-butoxycarbonyl)amino]-5-oxohexahydro-5H-[1,3]thiazolo[3,2-a]pyridine-3-carboxylate C14H22N2O5S 详情 详情
(XVI) 25150 methyl (3R,6S,8aS)-6-amino-5-oxohexahydro-5H-[1,3]thiazolo[3,2-a]pyridine-3-carboxylate C9H14N2O3S 详情 详情
(XVII) 25151 phenylmethanesulfonyl chloride 1939-99-7 C7H7ClO2S 详情 详情
(XVIII) 25152 methyl (3R,6S,8aS)-6-[(benzylsulfonyl)amino]-5-oxohexahydro-5H-[1,3]thiazolo[3,2-a]pyridine-3-carboxylate C16H20N2O5S2 详情 详情
(XIX) 25153 (3R,6S,8aS)-6-[(benzylsulfonyl)amino]-5-oxohexahydro-5H-[1,3]thiazolo[3,2-a]pyridine-3-carboxylic acid C15H18N2O5S2 详情 详情
(XX) 25154 tert-butyl (Z)-([(3S)-3-[([(3R,6S,8aS)-6-[(benzylsulfonyl)amino]-5-oxohexahydro-5H-[1,3]thiazolo[3,2-a]pyridin-3-yl]carbonyl)amino]-4,4-diethoxybutyl]amino)[(tert-butoxycarbonyl)amino]methylidenecarbamate C34H54N6O10S2 详情 详情
Extended Information